Larry C. Ford, M. D. of the Department of Obstetrics and Genecology, UCLA School of Medicine, Centre For The Health Sciences reported in Nov. 1, 1988, I tested them (the silver solutions) using standard anti-microbial tests for disinfectants. The silver solutions were anti-bacterial for concentrations of 105 organisms per ml of Streptococcus Pyogenes, Staphylococcus Aureus, Neisseria Gonorrhea, Gardnerella Vaginalis, Salmonella Typhi and other enteric pathogens, and fungicidal for Candida Albicans, Candida Globata and M. Furfur.
The tests refer to topical applications for which silvers uses are well known for its use in bandages ... the "tests" done by the quoted author do not in any way refer to internal usage and to do so takes the text out of its original context.
Colloidal silver has been approved by the EPA as a disinfectant for hospitals and medical centers.
In August 1999 The U.S. Food and Drug Administration(FDA) issued a ruling banning colloidal silver sellers from claiming any therapeutic value for the product.
In 2002 the Australian Therapeutic Goods Administration ruled that colloidal silver-containing products were no longer exempted from therapeutic goods legislation and had to meet the requirements of other products covered by this law. A TGA investigation found that "there are no current legitimate uses of colloidal silver and that the Surveillance Section of the TGA be requested to investigate the illegal availability of colloidal silver products because of concerns about their significant toxicity. The reasons for the recommendation were that:
"There is little evidence to support therapeutic claims made for colloidal silver products; the risk to consumers of silver toxicity outweighs the value of trying an unsubstantiated treatment, and bacterial resistance to silver can occur; and efforts should be made to curb the illegal availability of colloidal silver products, which is a significant public health issue."
Colloidal silver preparations are marketed on the internet as omnipotent antimicrobial agents, but scientific support for these claims is lacking. In 2004, van Hasselt, et al reported the results of in vitro tests of colloidal silver's antimicrobial activity against several pathogenic or non-pathogenic microorganisms. They took three samples of colloidal silver: one available commercially on the internet (silver concentration of 22 ppm) and two samples (concentrations of 403 and 413 ppm) which were prepared in our laboratory using standard chemical methods. Their results showed that in an agar-well diffusion assay none of the three colloidal silver solutions had any effect on the growth of the test organisms. All tested bacterial strains were sensitive to ciprofloxacin. Colloidal silver 22 ppm showed no bactericidal activity in phenol coefficient tests. Thus, they concluded that as the tested colloidal silver solutions did not show any antimicrobial effect in vitro on the microorganisms, claims of colloidal silver's antimicrobial potency are misleading and there is no place for it as an antiseptic (van Hasselt, et al, 2004).
Myoclonic status epilepticus following repeated oral ingestion of colloidal silver.
Neurology. 2004 Apr 27;62(8):1408-10
Mirsattari SM, Hammond RR, Sharpe MD, Leung FY, Young GB.
Department of Clinical Neurological Sciences, University of Western Ontario, London, Ontario, Canada.
The authors report a case of a 71-year-old man who developed myoclonic status epilepticus and coma after daily ingestion of colloidal silver for 4 months resulting in high levels of silver in plasma, erythrocytes, and CSF. Despite plasmapheresis, he remained in a persistent vegetative state until his death 5.5 months later. Silver products can cause irreversible neurologic toxicity associated with poor outcome.
PMID: 15111684 [PubMed - indexed for MEDLINE]
Edited by dlhunicorn - 5/8/08 at 10:53am